Sclerocactus papyracanthus is a species of cactus known by the common names grama grass cactus, paper-spined cactus, and toumeya. It is native to North America, where it occurs from Arizona to New Mexico to Texas and into Mexico.

This small cactus grows up to 8 centimeters tall by 2.5 wide. It is covered in so many spines they obscure the stems beneath. They are white, tan, or gray in color, papery in texture, and sometimes twisted or wavy in shape. The flower is up to 2.5 centimeters long and have light-colored outer tepals with dark midstripes. The fruit is green and dry at maturity.